KR20140115546A - Loose stop nut and fixing assembly for control valve - Google Patents
Loose stop nut and fixing assembly for control valve Download PDFInfo
- Publication number
- KR20140115546A KR20140115546A KR1020130030157A KR20130030157A KR20140115546A KR 20140115546 A KR20140115546 A KR 20140115546A KR 1020130030157 A KR1020130030157 A KR 1020130030157A KR 20130030157 A KR20130030157 A KR 20130030157A KR 20140115546 A KR20140115546 A KR 20140115546A
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- KR
- South Korea
- Prior art keywords
- nut
- main
- tightening
- female
- bolt
- Prior art date
Links
- 238000006073 displacement reaction Methods 0.000 claims abstract description 25
- 230000003405 preventing effect Effects 0.000 claims description 24
- 238000000034 method Methods 0.000 claims description 5
- 238000003825 pressing Methods 0.000 claims description 3
- 230000002265 prevention Effects 0.000 abstract description 13
- 230000008878 coupling Effects 0.000 abstract description 4
- 238000010168 coupling process Methods 0.000 abstract description 4
- 238000005859 coupling reaction Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 8
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000014509 gene expression Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B39/00—Locking of screws, bolts or nuts
- F16B39/02—Locking of screws, bolts or nuts in which the locking takes place after screwing down
- F16B39/04—Locking of screws, bolts or nuts in which the locking takes place after screwing down with a member penetrating the screw-threaded surface of at least one part, e.g. a pin, a wedge, cotter-pin, screw
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B39/00—Locking of screws, bolts or nuts
- F16B39/02—Locking of screws, bolts or nuts in which the locking takes place after screwing down
- F16B39/12—Locking of screws, bolts or nuts in which the locking takes place after screwing down by means of locknuts
- F16B39/16—Locking of screws, bolts or nuts in which the locking takes place after screwing down by means of locknuts in which the screw-thread of the locknut differs from that of the nut
- F16B39/18—Locking of screws, bolts or nuts in which the locking takes place after screwing down by means of locknuts in which the screw-thread of the locknut differs from that of the nut in which the locknut grips with screw-thread in the nuts as well as on the bolt
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B39/00—Locking of screws, bolts or nuts
- F16B39/22—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening
- F16B39/28—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening by special members on, or shape of, the nut or bolt
- F16B39/284—Locking by means of elastic deformation
- F16B39/286—Locking by means of elastic deformation caused by saw cuts
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Valve Housings (AREA)
Abstract
Description
The present invention relates to an anti-loose nut and a fixing assembly for a control valve using the same,
And more particularly, to a method of forming an incision in a nut main body having a main female thread portion and narrowing the gap of the incision portion by using a tightening means such as a fastening bolt (reducing the pitch of the female thread or reducing the inner diameter of the main ) It can be widely applied to applications where bolts and nuts which are fastened together are not to be released,
The present invention also relates to a fixing assembly for a control valve, which is screwed to a valve casing having a built-in diaphragm for opening and closing a flow passage by applying such a loosening prevention nut, thereby fixing the adjustment state of the adjustment screw for adjusting the displacement tolerance of the diaphragm.
Conventional loosening-type nuts
Japanese Patent Application Laid-Open No. 10-2005-0115213 (published on December 07, 2005) [Release prevention nut]
In order to prevent loosening of bolts and nuts used for assembling or fixing a member such as a mechanical device, the insertion ring is inserted into an insertion groove formed in the inside of the nut, A nut for preventing loosening of the bolt and the nut is provided by completely removing the clearance between the thread of the bolt and the nut by pushing the nut in one direction by the repulsive force against the force to separate the bolt and the nut .
In addition, there is a patent registration No. 10-1007300 (registration date January 04, 2011) [fastening structure of loosening preventing bolt and nut]
The patent discloses that the gap adjusting nut for fixing the two fixtures to be inserted into the bolt is fixed to the fixed nut while maintaining a state spaced apart from the fixed object by a predetermined distance, And the rotation preventing blade is fixed to the locking projection of the fixing nut fastened to the upper part of the unlocking member so that the rotation of the fixing nut can be controlled so as not to be loosened, And a fastening bolt and a nut fastening structure for maintaining a fixed state are proposed.
However, both of the above-mentioned conventional patents use a separate washer-type part to prevent loosening with the help of elasticity thereof. In order to apply it to a part where a vibration of a large amplitude is always generated, such as a boiler facility of a cogeneration power plant, There is a problem in certainty, and there is a problem that the loosening preventing force is hard to be maintained continuously due to the breakage of parts in repetition of loosening-bonding for maintenance and the like.
On the other hand, Japanese Patent Application Laid-Open No. 10-2011-0135364 (published on Dec. 16, 2011) [spring release type spring nut preventing loosening]
In the above patent, bolts and nuts are widely used for joining mechanical elements to devices and structures. The main role of the nuts is to maintain the force in the direction of the bolt axis. Especially, However, when vibration and shock are applied, momentary contact pressure is reduced and frictional force is almost lost. When this phenomenon is repeated, the screw is loosened and the combined structure and equipment are disassembled, Type spring nut.
Also, there is a patent registration No. 10-1179531 (registered on August 29, 2012) [loosening prevention nut and its manufacturing method]
The patent discloses a stable anti-loosening nut and its nut, which are not easily loosened even when used in an environment where continuous vibration or external force is applied, so that the body has a spiral shape so as to have elasticity and a thread is formed on the inner circumferential surface, The nut body is bolted tightly together and the helical body contracts and expands according to the temperature change so that the nut and the screw thread formed on the bolt tightly adhere firmly to each other and are firmly coupled, When an external force such as an external vibration or an impact is applied, the external force is absorbed elastically, so that it is not easily released.
Therefore, these two prior art patents are intended to prevent loosening due to the spring elasticity of the nut. Also, when the boom facility such as a cogeneration power plant or the like generates vibration at all times and with a large amplitude, It can not solve the problem that it is weakened by thermal deformation. Therefore, there is a problem in the reliability of preventing loosening in general application to various fields, and it is a technology which is difficult to activate because it is difficult to propose a manufacturing method capable of securing unit price competitiveness.
Accordingly, the present invention provides a simple, low-cost, and high-quality unbuckled bolt, which is constructed by narrowing the gap of the cut portion formed in the nut body (reducing the pitch of the female thread or reducing the inner diameter of the main female thread portion) And an object of the present invention is to provide a preventive nut.
According to the present invention, a fastening bolt is introduced by tightening means for narrowing a cut-out portion of a loosening preventing nut body, and a secondary female thread portion to which a fastening bolt is fastened is formed on a first displacement body or a second displacement body divided by a cut- The formation direction of the secondary female thread portion is parallel to the forming direction of the main female thread portion (when the tightening bolt is tightened, the pitch of the female threads is reduced to obtain a loosening prevention effect) or in a staggered direction (tightening bolt tightens the main female thread portion And an inner diameter is reduced to obtain a loosening preventing effect).
According to another aspect of the present invention, there is provided a control assembly for a control valve, which is screwed to a valve casing in which a diaphragm for opening and closing a flow passage is installed, to apply a concept of the release prevention nut to fix an adjustment state of the adjustment screw, The purpose is to provide.
It is another object of the present invention to provide a control assembly for a control valve, in which an elastic ring is further introduced into a threaded portion together with a loosening prevention nut to realize a double loosening prevention function.
According to an aspect of the present invention,
A main body including a vertical tightening hole and a main female screw formed on the inner circumferential surface of the tightening hole;
A cutout formed in the body; And
Tightening means for narrowing the clearance of the incised portion with respect to the main body in which the first displacer and the second displacer are divided with the incision portion as a boundary;
.
In the loosening prevention nut according to the present invention, the tightening means is composed of a tightening bolt which is coupled to the first displacement member or the second displacement member, or a subsidiary female threaded portion formed on both of them, to deform the main female threaded portion , The forming direction of the secondary female thread portion is preferably parallel or staggered with respect to the forming direction of the main female thread portion.
Meanwhile, the control assembly for a control valve applying the concept of the anti-loose nut according to the present invention
The diaphragm is screwed to a valve casing having a diaphragm for opening and closing the flow passage to fix the adjustment state of the adjustment screw to adjust the displacement tolerance of the diaphragm.
A mounting body coupled to the valve casing and having a first female thread portion;
A main body having an internal main main thread portion, an external main thread portion 2-1 male thread portion coupled to the main thread portion 1-1 and an external main thread portion 2-2,
An incision formed in the end of the 2-1 male thread portion or the 2-2 male thread portion,
And a tightening means for tightening the clearance of the incised portion with respect to the main body, the first displacement body and the second displacement body being divided by the cut-off portion as a boundary; And
An unlocking fixing bolt having a third male threaded portion coupled to the main female threaded portion of the unlocking nut body and a locking end portion contacting the adjustment screw surrounded by the mounting body;
.
Further, in the fixing assembly for a control valve applying the concept of the loosening prevention nut according to the present invention
The cutout portion of the release preventing nut is formed in the second-second male thread portion,
The tightening means is composed of an outer diameter portion of the end portion of the second-second male thread portion and a tightening nut coupled to the second-male thread portion and having an inner diameter portion for pressing the outer diameter portion,
A groove is formed in a portion overlapping the cut-out portion of the second-male thread portion, and an elastic ring is preferably coupled to the groove.
The release preventing nut according to the present invention is characterized in that the fastening bolt is introduced by a tightening means for narrowing the cut portion of the nut body and a subsidiary female thread portion to which the tightening bolt is fastened is formed on the first displacement body or the second displacement body divided by the cut- The direction of formation of the auxiliary female thread is parallel to the forming direction of the main female thread portion (when the tightening bolt is tightened, the pitch of the female thread is reduced to obtain the anti-loosening effect) or in the staggered direction The inner diameter of the part is reduced to obtain the anti-loosening effect).
Meanwhile, the control assembly for a control valve applying the concept of the anti-loose nut according to the present invention is screwed to a valve casing having a diaphragm for opening and closing the flow passage, so that the adjustment state of the adjustment screw for adjusting the displacement tolerance of the diaphragm can be fixed The concept of the unlocking nut is applied and further the elastic ring is further introduced into the threaded portion together with the unlocking nut to realize the double unlocking function so that the gap of the cut portion formed in the unlocking nut body is narrowed It is possible to provide a product that is simple, has excellent price competitiveness, and is superior in quality, by constituting the bolts fastened by reducing the pitch of the threads or reducing the inner diameter of the main female thread portion.
1 is a perspective view and a drawing of a drawing of a loosening prevention nut according to the present invention.
FIG. 2 is an exploded perspective view and a drawing of a fixing assembly for a control valve using a release preventing nut according to the present invention. FIG.
FIG. 3 is a front view, a cross-sectional view, and a drawing of a fixing assembly for a control valve using a release preventing nut according to the present invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be described in detail with reference to the accompanying drawings.
While the present invention has been described in connection with certain embodiments, it is obvious that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the invention. It is to be understood, however, that the invention is not intended to be limited to the particular forms disclosed, but on the contrary, is intended to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.
In the drawings, the same reference numerals are used for the same reference numerals, and in particular, the numerals of the tens and the digits of the digits, the digits of the tens, the digits of the digits and the alphabets are the same, Members referred to by reference numerals can be identified as members corresponding to these standards.
In the drawings, the components are expressed by exaggeratingly larger (or thicker) or smaller (or thinner) in size or thickness in consideration of the convenience of understanding, etc. However, It should not be.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In the present application, the term " comprising " or " consisting of ", or the like, refers to the presence of a feature, a number, a step, an operation, an element, a component, But do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof.
Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the contextual meaning of the related art and are to be interpreted as either ideal or overly formal in the sense of the present application Do not.
It is to be noted that the first to second to third and the like described in the present specification are merely referred to in order to distinguish the different components from one another and do not depend on the order in which they are manufactured, The names may not match in the range.
First, as shown in Fig. 1, a nut
The
The
This spacing gap can be narrowed by tightening means.
The
Particularly, the cut-out
The tightening means 20 is coupled to the
The first
1 (A), the forming direction of the auxiliary female threaded
The clearance of the
Since the pitch of the female threads in the
In addition, since the head of the tightening
It can be coupled to the
Next, the loosening preventing nut N2 shown in Fig. 1 (B) is similar to the nut N1 of Fig. 1 (A), and a description of common points will be omitted.
The main difference between the two nuts N1 and N2 is that the forming direction of the secondary female threaded
As compared with the vertical direction of the fastening hole 11 of the
The
If necessary, the formation direction of the flange portion may be an oblique direction.
1 (B), when the tightening
That is, in the structure of the release preventing nut (N2) of Fig. 1 [B], the tightening bolt (21)
The
The interval between the vertical crevices of the 'K' shaped
Both the release preventing nuts N1 and N2 of Figs. 1A and 1B are provided with a
In addition to a method in which the displacement of the clearance between the
The effect of preventing the loosening of the nut N1 (N2) fastened to the bolt by the elasticity of the elastic ring can be obtained.
Next, FIGS. 2 and 3 show a fixing assembly A for a control valve using an anti-loose nut according to the present invention.
As shown in FIG. 3B, the fixed assembly A is screwed to a valve casing V in which a diaphragm V1 that opens and closes a flow passage is installed in a thermal power plant or the like to adjust the displacement tolerance of the diaphragm V1 To adjust the adjusting state of the adjusting screw V2,
If the adjusted state of the adjusting screw (V2) is released, a problem occurs due to excessive flow or underflow of the flow rate,
Especially, it is important that the setting state is firmly fixed even when the external conditions such as shock, vibration, thermal expansion, and pressure change are changed.
To this end, the
The coupling of the cap type fitting 30 to the valve casing V is performed by adjusting the displacement allowance of the diaphragm V1 by rotating the adjusting screw V2 coupled to the inwardly threaded portion Va of the valve casing V This is for fixing the state.
The mounting
2 (B) [C] [D] and 3 [C] [D] [E] shown in FIGS. 2 to 3 This deformation-preventing nut (Nm)
A main female threaded
A
And a tightening means (20m) for narrowing a clearance gap of the incision portion with respect to the main body (10m) in which the first displacement body and the second displacement body are divided with the cutout portion as a boundary.
In FIG. 2, the first and second displacements are not referred to as different reference numerals. The first and second are not two, and the
2, the
Further, an
The effect of preventing loosening of the loosening preventing nut (Nm) fastened to the tightening nut (23) can be reinforced by the elasticity of the elastic ring.
In addition to the
The
That is, in order to firmly fix the adjusted state of the adjusted and adjusted adjusting screw V2
In a state where the mounting
The third threaded
In the state where the second-first male threaded
3, the
The fixing
Even when the axis of the third male threaded
The
Finally, when the second female threaded
The
The inner
When adjusting the additional adjusting screw (V2), it is sufficient to proceed with the method of reassembling after disassembling and re-adjusting in the reverse order of assembling and fixing.
In the above description, conventionally known technologies related to control valves and the like are omitted, but those skilled in the art can easily guess, deduce, and reproduce them.
While the present invention has been described with reference to the accompanying drawings, it is to be understood that the present invention is not limited to the disclosed embodiments, and various changes and modifications may be made without departing from the scope of the present invention. Such modifications, alterations, and substitutions are to be construed as being within the scope of the present invention.
N1, N2, Nm: Loosening nut A: Fixing assembly
10,10m:
13,13m: main
17Am17B:
19,19m:
23: tightening
30: mounting
40: Fixing bolt 41: Third male thread
43: locking end 45:
V: Valve casing V1: Diaphragm
V2: Adjusting screw V2a: Head
Claims (4)
A cutout formed in the body; And
Tightening means for narrowing the clearance of the incised portion with respect to the main body in which the first displacer and the second displacer are divided with the incision portion as a boundary;
.
The tightening means
And a tightening bolt coupled to the first female screw portion or the second female screw portion formed on both of the first and second displacement bodies to deform the main female thread portion,
Wherein the forming direction of the secondary female threaded portion is parallel to or offset from the forming direction of the main female threaded portion.
A mounting body coupled to the valve casing and having a first female thread portion;
A main body having an internal main main thread portion, an external main thread portion 2-1 male thread portion coupled to the main thread portion 1-1 and an external main thread portion 2-2,
An incision formed in the end of the 2-1 male thread portion or the 2-2 male thread portion,
And a tightening means for tightening the clearance of the incised portion with respect to the main body, the first displacement body and the second displacement body being divided by the cut-off portion as a boundary; And
An unlocking fixing bolt having a third male threaded portion coupled to the main female threaded portion of the unlocking nut body and a locking end portion contacting the adjustment screw surrounded by the mounting body;
For a control valve.
The cutout portion of the release preventing nut is formed in the second-second male thread portion,
The tightening means
An outer diameter portion of an end portion of the second-
And a tightening nut coupled to the second-second male threaded portion and having an inner diameter portion pressing the outer diameter portion.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020130030157A KR20140115546A (en) | 2013-03-21 | 2013-03-21 | Loose stop nut and fixing assembly for control valve |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020130030157A KR20140115546A (en) | 2013-03-21 | 2013-03-21 | Loose stop nut and fixing assembly for control valve |
Publications (1)
Publication Number | Publication Date |
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KR20140115546A true KR20140115546A (en) | 2014-10-01 |
Family
ID=51989838
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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KR1020130030157A KR20140115546A (en) | 2013-03-21 | 2013-03-21 | Loose stop nut and fixing assembly for control valve |
Country Status (1)
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KR (1) | KR20140115546A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109756799A (en) * | 2018-12-28 | 2019-05-14 | 广州佳比亚电子科技有限公司 | A kind of outdoor garden rain-proof loudspeaker box |
-
2013
- 2013-03-21 KR KR1020130030157A patent/KR20140115546A/en not_active Application Discontinuation
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109756799A (en) * | 2018-12-28 | 2019-05-14 | 广州佳比亚电子科技有限公司 | A kind of outdoor garden rain-proof loudspeaker box |
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